Marketplace · API · x402

beliefstate.ai/v1/research/refresh_market_data

Free research catalog: https://beliefstate.ai/v1/research. Company, ETF/fund and entity research briefs with attributed theses, risks, catalysts, citations and historical cutoffs. Overview, typed current view and full export are supported. Full input/output contracts: https://beliefstate.ai/v1/research/refresh_market_data

Endpoint	`https://beliefstate.ai/v1/research/refresh_market_data`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xd346b16f2C013d8219350d32E511023D16Db9AEE
method	POST
last updated	2026-11-10T19:19:07.917Z

Use it

Call it (an x402 client pays automatically)

curl -i https://beliefstate.ai/v1/research/refresh_market_data
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-b6144cc610851f46

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}